The problem is when we connect with spiritual beings, even when see things in the physical world, we are biased. Everything passes through are brains and every stimulus is clouded by our own subjective interpretation.
With spiritual beings, we will contact their essence, but also force upon this essence some of our own misconceptions and faults in perception.
The way I 'see' Raphael will not be the same you see Raphael, I know my version of Raphael is different to at least another person...
The point is, my image of Raphael is made up of his essence and my own understanding of that being, of my own judgements, and my own spiritual bias.
I personally believe angels do not have a form as we have a form, not even an energy body. They are just pure force directed by the will of god/universal will, or laws. Our limited perception merely can't handle communing with such things and so within the field of our consciousness we must give them a form with which we can communicate, or they will take a form in which they can communicate.
This may be a male, or a female, depending on your expectations, personal biases, and what form would be best for your understanding.
so there are no male and female angels. But there are angels which may be (albeit wrongly) perceived as being male or female.